Dust collector



Oct. 12, 1943. R. L. LINCOLN DUST COLLECTOR Filed Feb. 24, 1941 INVENTOR ROLANDL. Lnvcouv @441 ATrokNEv 1 the line 2-2 of Fig. 1, and

Patented Oct. 12, 1943 I UNIT D 5, STATES ass sts PATENT OFF-ICE nos'r oounc'roa Roland L. Lincoln, Dedhnm, Mass, assigno Y B. F. Sturtevant Gompany noston,

rto Mass.

* I Appliflation February 24, 1941, Serial No. 880,184

, aClaims; This invention relates to concentrators and separators, and relates morev particularly to conchannel 36 is formed between the adjacent ends of the arcs 82 and 29.

The gas entering the duct l3 under pressure, is given a clock-wise whirl by the tongues 2| and travels around the interior surfaces of the arc shaped inner walls 29, 30, 3| and 32 so that the solid particles are thrown out by centrifugal A feature of one embodiment of the invention reside in providing a single unit separator with its wall in the shape of a pyramid having rectangular cross-sections and having internal curved walls with one or more tangential outlet channels therebetween for the separation of the solid particles.

Objects of thevinvention are to increase the efllciency of separation in, and to decrease the cost of, separators for removing solid particles from'gases.

The invention will erence to the drawing, of which:

Fig. 1 is a side elevation in section, of an embodiment of a single unit collector according to this invention; a

Fig. 2 is an enlarged sectional view taken along Fig. 3 is a sectional view taken along the line 3-8 of Fig. 1. 4 The lower portion of the separator of Figs 1-3, below the outlet tube l5 and the whirl imparting tongues 2| is formed a illustrated by Figs. 1 and 3 as a pyramid, square in cross- "section. Prior collectors utilized. a cylindrical separator casing with 'a converging hopper connected to the under portion thereof. The'present construction results, in decreased fabricating cost and in increased efficiency.

now be described with ref- I force, into the channels 33, 84, and 38 and thence intothe comer spaces of the hopper.

While one embodiment of the invention has been described for the purp se of illustration, it should be understood that the invention is not limited to the exact apparatus and arrangements of apparatus described'as modifications thereof may be'suggestedby those skilledyin the art without departure from the essenc of the invention. What is claimed is: or s 1. A separator for removing solid particles from a gas, comprising a substantially vertically extending casing, means for admitting gas into said casing and for imparting a rotary motion in the casing to the gas, means including a converging inner wall forming a substantially conical'flow passage extending downwardly within said casing below said means and receiving rotating gas therefrom, said wall having a plu-.

rality of downwardly extending, tangentially disposed skimming channels formed therein, and a gas outlet tube extending through the upper portion of said easing into. the space within said flow passage, said casing having converging outer walls. extending completely around and 'I'he outer walls 28 are'straight and form a pyramid, square in cross-section. Contained within the walls 28 are the curved walls-28, 30, 3| and 32 which preferably are formed as similar conical segments, each extending in section, in;

an are which is a fraction over one-fourth of a similar circle, the center of each being displaced with reference to the center of the others so that the channel 33 is formed between the adiacent ends of the arcs 29 and 30, the channel 1 34 is formed between the adjacent ends of the arcs 30 and SJ, the channel 3! is formed between the adjacent ends of the arcs II and 32, andthe by said outer walls and forming passages at said spaced from said inner wall at a plurality of points and forming passages at said points for solid particles, said channel discharging said particles into said passages.

2. A separator for removing solid particles from a gas, comprising a substantially vertically extending casing, means for admitting gas into said casing and for imparting a rotary motion inthe casing to the gas, means including a converging inner wall formin a substantailly conical flow passage extending downwardly within said casing below said means and receiving rotating gas therefrom, said wall having a plu-' rality of downwardly extending, tangentially dis-f posed skimming channels formed therein, a gas outlet tube extending through the upper portion of said casing into the space within saidflow passage, said casing having lower conversing. outer walls rectangular in cross-section; around and spaced from said inner wall at the corners formed corners around said inner wall, for solid particles,

said channels discharging solid particles into said passages.

3. A separator for removing solid particles from a gas, comprising a substantially vertically extending casing, means for admitting gas into said casing and for imparting a rotary motion in the casing to the gas, a plurality of separate curved walls formed as conical segments, extending downwardly within said casing below said means and receiving rotatingrgas therefrom, said walls in section forming arcs of substantially imilar eccentric circles, said walls forming therebetween a plurality of downwardly extendparticles into said passages.

ing, tangentially disposed skimming channels,

said casing having converging lower walls, rectangular in cross-section, forming a hopper, said converging lower walls. and said curved walls being spaced apart at the corners formed by said lower walls and forming in said corners, discharge passages for solid particles, and a gas outlet tube extending through the upper portlon of said casing into the space between said curved walls, said channels discharging 'solld ROLAND L. LINCOLN. 

